RT Journal
T1 QUestions and answers
JF JAMA
JO JAMA
YR 1969
FD October 20
VO 210
IS 3
SP 563
OP 564
DO 10.1001/jama.1969.03160290115052
UL http://dx.doi.org/10.1001/jama.1969.03160290115052
AB